Important

This project is under development. All source code and features on the main branch are for the purpose of testing or evaluation and not production ready.

MFD Ping

Module for handling ping command.

Important

ESXi Users ONLY
This module requires vsphere-automation-sdk to work.
Please add vsphere-automation-sdk to your requirements file or install it manually:

pip install vsphere-automation-sdk @ git+https://github.com/vmware/[email protected]

For currently supported version of vsphere-automation-sdk please refer to mfd-esxi/README.

Usage

from mfd_connect import LocalConnection
from mfd_ping import Ping

ping_tool = Ping(connection=LocalConnection())
ping_process = ping_tool.start(dst_ip='127.0.0.1', count=10)
print(ping_tool.stop(ping_process))

API

• Start ping, dst_ip is required, rest of arguments are optional. "namespace" argument is available only on Linux systems.

def start( 
    dst_ip: IPv4Address | IPv6Address | IPAddress | str,
    mtu: int | None = None,
    count: int | None = None,
    packet_size: int | None = None,
    src_ip: IPv4Address | IPv6Address | IPAddress | str | None = None,
    timeout: int | None = None,
    frag: bool | None = None,
    ttl: int | None = None,
    broadcast: bool | None = None,
    args: str | None = None,
    namespace: str | None = None,
    output_file: str | None = None,
    ) -> "RemoteProcess"
    """
    Start pinging destination machine.
    
    :param dst_ip: Destination IP address to perform ping
    :param mtu: Value of maximum transmission unit. Overriding usage of packet_size
    :param count: Number of echo requests to send
    :param packet_size: Size of ping packet in bytes. Not compatible with mtu. MTU size will be used instead.
    :param src_ip: Source IP address to use ping
    :param timeout: Program execution timeout, in seconds
    :param frag: Enable fragmentation
    :param ttl: Time-To-Live value
    :param broadcast: Broadcast ping
    :param args: Additional arguments to ping method
    :param namespace: Namespace in which command should be executed
    :param output_file: path to file where log will be saved
    :return: OS process with ping.
    :raises PingException:  if addresses are incorrect.
                            if ping command fails on execution
                            if passed incorrect args
    """

• Stop ping

def stop(process: "RemoteProcess") -> "PingResult"
    """
    Kill pinging process and report result.
    
    :param process: OS process with ping.
    :return: DataClass PingResult with pass_count and fail_count of ping requests.
    """

PingResult dataclass:

pass_count: int - (legacy packets_transmitted)
fail_count: int - (legacy packets_transmitted - packets_received)
packets_transmitted: int
packets_received: int
packets_duplicates: int
errors: int
packet_loss: float
rtt_min: float
rtt_avg: float
rtt_max: float

MTU (Maximum Transmission Unit)

MTU is a networking term that defines the largest packet size that can be sent over a network connection.

For IPv4 it's lowered about 28 and for IPv6 about 48 bytes (headers)

If user pass values to mtu and packet_size arguments in start() function at the same time, packet_size will be ignored and mtu will be used instead.

Traffic Manager

PingClientTraffic/PingServerTraffic has been implemented with Traffic interface. It can be used with Traffic Manager and Stream in mfd-traffic-manager as one of supported traffics. Details are available in mfd-traffic-manager documentation.

Traffic API

All classes for specific traffics (e.g. PingClientTraffic) should inherit from Traffic base class interface. It provides some abstract methods, all of them need to be implemented in child classes:

• start() -> None - start traffic
• stop() -> None - stop traffic
• run(duration: int) -> None - run traffic for a specified number of seconds
• validate(validation_criteria: dict[Callable, dict[str, Any]] | None = None) -> bool - validate traffic by passed criteria

Example usage:

import time

from mfd_connect import RPyCConnection

from mfd_ping import PingClientTraffic, PingServerTraffic 
from mfd_traffic_manager import TrafficManager, Stream

manager = TrafficManager()
conn = RPyCConnection(ip="10.10.10.11") 

ping_client_1 = PingClientTraffic(connection=conn, dst_ip="12.12.12.12")
ping_client_2 = PingClientTraffic(connection=conn, dst_ip="12.12.12.13" mtu=1500)
ping_server = PingServerTraffic() # Initialize dummy server for ping traffic
ping_stream_1 = Stream(clients=[ping_client_1], server=ping_server)
ping_stream_2 = Stream(clients=[ping_client_2], server=ping_server)
manager.add_stream(ping_stream_1)
manager.add_stream(ping_stream_2)
manager.start_all()
time.sleep(3)  # some waiting or actions
manager.stop_all()
manager.validate_all()
manager.run_all(duration=5)

OS supported:

Here is a place to write what OSes support your MFD module:

• WINDOWS
• LINUX
• ESXi
• FREEBSD
• Mellanox switch with InteractiveSSHConnection

Issue reporting

If you encounter any bugs or have suggestions for improvements, you're welcome to contribute directly or open an issue here.